-27.94% is the change from 723 to 521
Calculation steps:
[( 521 - 723 ) ÷ 723] x 100 = -27.94%
Formula
Percentage change = [(521 - 723) / 723] x 100
Subtract the new number by the original number
521 - 723 = -202
-202 ÷ 723 = -0.2793914246196404
-0.2793914246196404 x 100 = -27.94%